Android R cannot be resolved to a variable

What works for me to solve this issue is to edit Android Manifest XML and the project properties.

In Android Manifest set the target version to the latest version:

android:minSdkVersion="11"
android:targetSdkVersion="23" />

In Project Properties set also the latest version:

# Project target.
target=android-23

This will work if the Android project has successfully run before but due to the latest version update of Android Studio software, the "Android R cannot be resolve to a variable" error is shown. Google wants you to set your project compatible to the newest Android version.

Cheers..Hope it helps.. :)

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